Has anyone clue why my list reference doesnt update when used as method reference

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[ursus]

Has anyone clue why my list reference doesnt update when used as method reference

[Shawn]

at class initialization time, you’re creating a reference to, for example, ArrayList@3cbbc1e0#get

[Shawn]

then using setData, you’re replacing that list

[Shawn]

call it ArrayList@35fb3008

[Shawn]

you’ve updated items , but itemGetter is still the same method reference to get on that first ArrayList

[Shawn]

the reason the lambda works is because it’s a closure that (effectively) calls this.getItems().get()

[Shawn]

which prevents you from keeping a stale reference to an old, replaced, list

[ursus]

isnt that a bug?

[Shawn]

no

[Shawn]

well, it’s a bug in your program

[Shawn]

they are semantically two different things

[ursus]

in theory isnt method reference just sugar for the lambda?

[Shawn]

Not at all.

[ursus]

alright then there's the problem

[Shawn]

An instance method reference is literally a reference to a method on a specified object